150万吨年渣油催化裂化反应再生系统工艺设计

1150万吨/年渣油催化裂化反应再生系统工艺设计摘要在本设计中，使用大庆常压渣油作为原料，采用汽油生产方案，进行渣油催化裂化反再系统的工艺设计。催化裂化装置由反应再生系统，分馏系统，吸收稳定系统和能量回收系统组成。本设计主要针对反应再生系统进行设计计算。由于渣油催化裂化的焦炭产率高，对再生器的烧焦能力要求较高，故本设计选用烧焦罐式再生器以实现高效完全再生。在本设计中，基于设计的原料性质，参考国内同类装置的数据采用高低并列式再生系统，提升过反应器和烧焦罐高温完全再生系统。反应部分：反应器为原料油和催化剂充分接触提供必要的空间，本设计采用提升管、汽提段、沉降器同轴布置，以减少生焦，提高轻质油收率。再生部分：再生器的作用是烧焦，烧掉催化剂上的积炭，使催化剂上的活性得以恢复。本设计采用带有预混合管的高效烧焦罐式再生器，可使催化剂含碳量降到0.1%以下，充分发挥了催化剂的选择性，延长了催化剂的寿命。关键词：催化裂化，提升管，再生器，催化剂2TECHNOLOGCIALDESIGNFORREACTIONANDREGENERATIONSYSTEMOF150wt/aRFCCAbstractReactionandregenerationsystemtechnologyofa270wt/aRFCCprocessingDAQINGatmosphericresiduefeedstockhasbeendesignedandcalculatedinthislayout.Thecatalyticcrackingunitismadeupfromreactionandregenerationsystemfractionationsystem，absorptionandstabilizationsystemandenergyrecoversystem.Thislayoutisderectedagainstreactionandregenerationsystemtocompute.AhighefficientandcompletecokeburningregeneratorhavinghighburningcapacitywasadoptedbecausemuchcokewasproducedduringRFCCprocess.Inthedesign，Referringtothedatesoffeedandthesametypereactors，Idesignahigh-lowparallelFCCreactor-regeneratorsystem-riserreactorandcokecontainerhightemperaturecompletereactor-regeneratorsystem.Thepartofreaction:thereactordevelopssufficientroomforfeedoilandcatalyticcontactingcompletely.Thiskindofdesignistoreducecokepromoterecallratiooflightoil.Thepartofregeneratorsystem:theregeneratorcanburnupremainingcarbonaboutcatalytictorecoveractivityofCAT.Generalspeaking，mydesigncanreducetheratioofcarboninCATto0.1%，soitmakesfulluseofchoiceofCAT，extendsthelifeofthecatalyst.Keywords:catalyticcracking，riser，regenerator，catalyst3目录1文献综述......................................................................................11.1催化裂化工艺产生的背景及意义.............................................................................11.1.1国外催化裂化................................................................................................11.1.2国内催化裂化................................................................................................21.2催化裂化技术的现状及发展.....................................................................................21.2.1国外催化裂化技术的现状及发展................................................................31.2.2我国催化裂化技术的现状及发展................................................................51.3重油催化裂化.............................................................................................................71.3.1重油催化裂化的原料....................................................................................81.3.2重油催化裂化的产品....................................................................................81.3.3重油催化裂化装置特点................................................................................81.4催化裂化装置研究进展...........................................................................................111.4.1催化裂化再生装置形式..............................................................................111.4.2催化裂化反应装置形式..............................................................................151.4.3催化裂化反应—再生两器排布方式..........................................................191.4.4提升管末端快速分离器..............................................................................211.4.5进料雾化喷嘴..............................................................................................241.4.6空气分布器..................................................................................................261.4.7结语..............................................................................................................292设计说明.....................................................................................3042.1加工方案的确定及装置形式的选择......................................................................302.1.1加工方案.....................................................................................................302.1.2装置形式的选择.........................................................................................302.2流程说明..................................................................................................................302.2.1反应再生系统.............................................................................................302.2.2分馏系统.....................................................................................................322.2.3吸收稳定系统.............................................................................................342.3主要操作条件..........................................................................................................352.3.1再生温度.....................................................................................................352.3.2再生压力.....................................................................................................362.3.3再生烟气中过剩氧含量.............................................................................362.3.4反应温度.....................................................................................................362.3.5反应压力.....................................................................................................372.3.6焦中氢碳比（H/C）........